pulled at a relative velocity of 0.40 m/s greater than the top plate. The fluid used is water at 24°C. a. How far apart should the two plates be placed so that the shear stress t is 0.30 N/m^2? Also, calculate the shear rate. b. If oil with a viscosity of 2.0 x 10^-2 Pa•s is used instead at the same plate spacing and velocity as in part (a), what is the shear stress and the shear rate

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.